8(1)If the commuted value of the benefit of a member or minister is divided under section 20.1 of the Act, the annual pension, minister’s pension or deferred pension to which the member or minister is entitled on ceasing to be a member shall be revalued so that it represents the annual pension, minister’s pension or deferred pension to which the member or minister would have been entitled at that time had the division not been made, less the spouse’s portion or common-law partner’s portion, including any escalated adjustment calculated in accordance with the escalation formula in effect under the Act on the date of the breakdown of their marriage or common-law partnership, as the case may be, between the date of the breakdown of the marriage or common-law partnership and the date of ceasing to be a member.